\begin{tabular}{l*{3}{c}}
\hline\hline
            &          EV&            &            \\
            &      Likert&    Likert +&        QVSR\\
\hline
Observations (dup incl)&        1392&        1391&        1397\\
Individuals (dup excl)&        1357&        1349&        1325\\
Duplicate rate&           3&           3&           5\\
Donation task (dup excluded)&        1257&        1259&        1163\\
Gender (dup excluded)&        1333&        1333&        1251\\
Drop out rate (as a share of ind.)&           2&           1&           6\\
Loss rate (as a share of obs.)&           4&           4&          10\\
DG (dup excl)&         513&         532&         493\\
Letter Writing (dup excl)&         518&         540&         508\\
\hline\hline
\end{tabular}
